Note that source and destination IP addresses have been obfuscated by using xx.xx.xx.xx as source and yy.yy.yy.yy as destination.

Now, if the client sends the "POST /myApp/myWebService HTTP/1.1" line in two (or more) TCP packets, as explained before, the issue will show up, and the GlassFish Server will close the connection before the client has completed sending the full POST request. The corresponding Wireshark capture showing this is:

As seen above, in packet #51, GlassFish sends a FIN packet with no apparent reason, prematurely closing the connection. No access will be logged in GlassFish access logs.and the server.log show a finishConnection entry in FINEST logging.